s390/vtime: steal time exponential moving average

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To be able to judge the current overcommitment ratio for a CPU add
a lowcore field with the exponential moving average of the steal time.
The average is updated every tick.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Martin Schwidefsky 2019-03-06 13:31:21 +02:00

parent 01396a374c

commit 152e9b8676

3 changed files with 45 additions and 38 deletions

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61

arch/s390/include/asm/lowcore.h

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3

arch/s390/kernel/smp.c

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19

arch/s390/kernel/vtime.c

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